package com.zzyl.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.crypto.digest.BCrypt;
import cn.hutool.json.JSONUtil;
import com.zzyl.constant.CacheConstants;
import com.zzyl.constant.SuperConstant;
import com.zzyl.dto.LoginDto;
import com.zzyl.entity.Resource;
import com.zzyl.entity.User;
import com.zzyl.enums.BasicEnum;
import com.zzyl.exception.BaseException;
import com.zzyl.mapper.ResourceMapper;
import com.zzyl.mapper.UserMapper;
import com.zzyl.properties.JwtTokenManagerProperties;
import com.zzyl.properties.SecurityConfigProperties;
import com.zzyl.service.LoginService;
import com.zzyl.utils.JwtUtil;
import com.zzyl.utils.ObjectUtil;
import com.zzyl.vo.UserVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private JwtTokenManagerProperties jwtTokenManagerProperties;
    @Autowired
    private ResourceMapper resourceMapper;
    @Autowired
    private SecurityConfigProperties securityConfigProperties;
    @Autowired
    private StringRedisTemplate redisTemplate;
    /**
     * 用户登录
     * @param loginDto
     * @return
     */
    @Override
    public UserVo login(LoginDto loginDto) {
        //1.根据用户名查询用户
        User user = userMapper.selectByUserName(loginDto.getUsername());
        //2.判断用户是否为空
        if(ObjectUtil.isEmpty(user)){
            throw new BaseException(BasicEnum.LOGIN_FAIL);
        }
        //3.判断账户是否被禁用
        if(user.getDataState().equals(SuperConstant.DATA_STATE_1)){
            throw new BaseException(BasicEnum.ACCOUNT_DISABLED);
        }
        //4.判断密码是否正确
        if(!BCrypt.checkpw(loginDto.getPassword(), user.getPassword())){
            throw new BaseException(BasicEnum.INCORRECT_PASSWORD);
        }
        //对象转换
        UserVo userVo = BeanUtil.toBean(user, UserVo.class);

        //5.密码脱敏
        userVo.setPassword("");
        //获取用户资源列表
        List<Resource> resourceList = resourceMapper.selectListByUserId(userVo.getId());
        //取出request_path
        List<String> urlList = resourceList.stream().map(Resource::getRequestPath).collect(Collectors.toList());
        //获取白名单列表
        List<String> publicAccessUrls = securityConfigProperties.getPublicAccessUrls();
        urlList.addAll(publicAccessUrls);

        Map<String,Object> claims = new HashMap<>();
        claims.put("currentUser", JSONUtil.toJsonStr(userVo));


        //6.根据用户生成JWT
        String token = JwtUtil.createJWT(jwtTokenManagerProperties.getBase64EncodedSecretKey(), jwtTokenManagerProperties.getTtl(), claims);
        //过期时间
        int ttl = jwtTokenManagerProperties.getTtl() / 1000;
        //存储到redis
        redisTemplate.opsForValue().set(CacheConstants.PUBLIC_ACCESS_URLS + userVo.getId(),JSONUtil.toJsonStr(urlList),ttl, TimeUnit.SECONDS);

        userVo.setUserToken(token);
        return userVo;
    }
}
